The purpose of this short report is to provide additional evidence of the reliability of the LMX-7 (Northouse, 2007, 2016) as well as offer potential construct validity data in support of its practical application. The LMX-7 is an instrument designed to assess the degree to which leaders and members of an organization relate to each other for the effective functioning of the organization. The LMX-7 has substantial theoretical development based on Social Exchange Theory and promising evidence of its construct validity (Gerstner & Day, 1997; Nickels & Ford, 2017). It has been used in a variety of studies of supervisor-supervisee relationships. However, with the growth of the field of leadership research, there also has been the increase in instruments to assess leadership relationships and styles, and these instruments need continuing psychometric support for their reliability and validity (Squires, 2018). Two independent samples of teachers participated in this study. The first sample included 110 teachers; the second sample included 38 additional teachers. Demographic data about age, gender, race, language, experience and training were collected for both samples. Teachers were asked to complete the LMX-7 survey for either a previous supervisor or a current supervisor. This paper discusses the instruments used, procedures, and findings of the results of the two samples.